I think I should rephrase it... what I meant was that being in that position for the last 4 years, you have probably an idea of how much you should be earning by virtue of talking to colleagues / other lawyers in the same position. Alternatively, try to talk to employment agencies and see if there is demands in your field, usually the higher the demand, the higher the salary that you should ask.

no joke was intended, but I can see how it came across that way